The makers of Half-Life, Team Fortress and Portal are taking popular Warcraft III mod Defense of the Ancients and making it their own. The man behind it all gets into the nitty-gritty of the all-new Dota in a new Q&A.

Rumors that Valve is planning on doing more with ultra-popular Warcraft III mod Defense of the Ancients All-Stars—or DotA—feel a lot less rumor-like now. The Half-Life developer recently trademarked "DOTA" for future use.

Having hummed along quietly for around a year now since being picked up by Valve, IceFrog - developers of the popular "Defence of the Ancients Allstars" scenario for Warcraft III - seem to be making progress on their latest work.